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eMMC on STM32H743 always Disk Error

Charlie CHEN
Associate II

Hi,

 

Like old topic says : https://community.st.com/s/question/0D50X0000BbNEpXSQW/fatfs-emmc-always-frdiskerror?t=1573783271738

 

I`m trying to build project for STM32H743 with STM32CubeMX, and use eMMC for my storage space.

eMMC : Micron 4GB

Manager File : FATFS

This is the (Left)CSD Register it retured & (Right)the Micron datasheet

And I have no ideal about

MaxRdCurrentVddMin,

MaxRdCurrentVddMax,

MaxWrCurrentVddMin,

MaxWrCurrentVddMax, are all zero,but the true value is not.

0690X00000As3uPQAR.png

Can anyone help?

I`ll really appreciate.

3 REPLIES 3
schumilop
Associate

Hi, were you able to solve this? I am getting the same error when I try to use an SD card with STM32H7

Haithem Rahmani
ST Employee

Hi @Charlie CHEN​

Could you try to use the Polling API instead of the DMA one to discard any potential issue related to cachee maintenance?

regards

haithem.

Hi @schumilop​ 

Getting the same error doesn't mean the same root cause.

since you are using the SD card, you may check one of the reference apps provided within the CubeFW package.

for example this one:

https://github.com/STMicroelectronics/STM32CubeH7/tree/master/Projects/STM32H743I-EVAL/Applications/FatFs/FatFs_uSD_DMA_Standalone